double p1_dNdxiN[3][4][4] = 
{
{ 
{ 
1/24.0, 
1/24.0, 
1/24.0, 
1/24.0, 
},
{ 
0.0, 
0.0, 
0.0, 
0.0, 
},
{ 
0.0, 
0.0, 
0.0, 
0.0, 
},
{ 
-1/24.0, 
-1/24.0, 
-1/24.0, 
-1/24.0, 
}},
{ 
{ 
0.0, 
0.0, 
0.0, 
0.0, 
},
{ 
1/24.0, 
1/24.0, 
1/24.0, 
1/24.0, 
},
{ 
0.0, 
0.0, 
0.0, 
0.0, 
},
{ 
-1/24.0, 
-1/24.0, 
-1/24.0, 
-1/24.0, 
}},
{ 
{ 
0.0, 
0.0, 
0.0, 
0.0, 
},
{ 
0.0, 
0.0, 
0.0, 
0.0, 
},
{ 
1/24.0, 
1/24.0, 
1/24.0, 
1/24.0, 
},
{ 
-1/24.0, 
-1/24.0, 
-1/24.0, 
-1/24.0, 
}}
};
